CAPEDashboard

CAPE Dashboard puts four time-tested stock market valuation metrics at your fingertips, with historical data stretching back to 1871.
How expensive is the stock market right now? Instead of guessing, check the data. CAPE Dashboard computes four complementary valuation indicators and shows where today's reading falls in over 150 years of market history.
THE METRICS
CAPE Ratio (Shiller P/E) — Developed by Nobel laureate Robert Shiller, the Cyclically Adjusted Price-to-Earnings ratio divides the S&P 500 by ten years of inflation-adjusted earnings. It smooths out short-term earnings swings and is one of the most widely cited long-term valuation measures.
Trailing P/E — The classic price-to-earnings ratio using the most recent 12 months of reported earnings. More responsive to current conditions than CAPE, but also more volatile.
Dividend Yield — Annual dividends paid by S&P 500 companies divided by the index price. One of the oldest and most reliable long-term return predictors.
Buffett Indicator — Warren Buffett called it "probably the best single measure of where valuations stand." It compares total US stock market capitalization to GDP. Powered by Federal Reserve (FRED) data.
FEATURES

Dashboard view with color-coded valuation bands for all four metrics
Interactive historical charts for each metric — zoom from 10 years to the full 150+ year history
Percentile rankings showing where today's values fall relative to all recorded history
Key statistics: current value, historical median, mean, all-time highs and lows
Educational content explaining each metric, what high and low readings mean, and important caveats
Optional live price updates via Alpha Vantage (free API key, 25 requests/day)
Home screen widgets (small and medium) for a quick glance at current valuations
Dark mode support
No account required — works immediately on launch

DATA SOURCES
Historical data derived from Robert Shiller's publicly available dataset (Yale University), updated monthly. Buffett Indicator computed from Wilshire 5000 and GDP data via the Federal Reserve Bank of St. Louis (FRED). Optional live S&P 500 estimates via Alpha Vantage.
This app is for informational and educational purposes only. It is not financial advice. Past valuations do not predict future returns. Not affiliated with or endorsed by Yale University, Robert J. Shiller, Barclays, or the Federal Reserve.